8763 search results - page 7 / 1753 » Querying Database Knowledge |
BNCOD
2003
14 years 11 months ago
2003
In this paper we describe a query paradigm based on ontologies, aggregate table-driven querying and expansion of QBE. It has two novel features: visually specifying aggregate table...
120
click to vote
IDEAS
2010
IEEE
14 years 8 months ago
2010
IEEE
Even though an effective cost-based query optimizer is of utmost importance for the efficient evaluation of XQuery expressions in native XML database systems, such a component is...
120
click to vote
PVLDB
2008
14 years 9 months ago
2008
The diversity and large volumes of data processed in the Natural Sciences today has led to a proliferation of highlyspecialized and autonomous scientific databases with inherent a...
107
click to vote
DATESO
2009
14 years 7 months ago
2009
Ontology as a knowledge base can provide different reasoning tasks, e.g. to check consistency of the ontology or to check whether a resource is instance of a concept or not. In thi...
193
click to vote
ICDE
2002
IEEE
15 years 11 months ago
2002
IEEE
With the growth of the Web, there has been a rapid increase in the number of users who need to access online databases without having a detailed knowledge of the schema or of quer...